Multiplexed static FBG strain sensors by dual-comb spectroscopy with a free running fiber laser

被引：43

作者：

Guo, Jingjing ^{[1
]}

Ding, Yihang ^{[1
]}

Xiao, Xiaosheng ^{[1
]}

Kong, Lingjie ^{[1
]}

Yang, Changxi ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Precis Instruments, State Key Lab Precis Measurement Technol & Instru, Beijing 100084, Peoples R China

来源：

OPTICS EXPRESS | 2018年 / 26卷 / 13期

关键词：

BRAGG-GRATINGS; TEMPERATURE; RESOLUTION;

D O I：

10.1364/OE.26.016147

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate a novel and compact FBG interrogation system for multiplexed static strain sensing with a free running mode-locked fiber laser. Multiplexed FBG array in cascading are interrogated by coherent dual-comb pulses generated from a single fiber laser. Dual-comb spectroscopy is achieved with the fiber laser to precisely detect the strain-induced spectral shifts of the FBG sensors. Multi-point strain measurements are performed to characterize the proposed system, where a large dynamic range of 520 mu epsilon with 0.5 mu epsilon resolution is achieved. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：16147 / 16154

页数：8

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